In-situ solidification of invert emulsion fluids to form gas tight annular barrier
CA 2746567 C · Owner: M-I Llc · Inventors: Svoboda, Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wellbore fluid is disclosed. The wellbore fluid comprises an oleaginous fluid a non-oleaginous fluid and about 5 to about 50 pounds per barrel of a thermally activated hydrocarbon gallant. The oleaginous fluid is in the continuous phase of the wellbore fluid. The non-oleaginous fluid is in the discontinuous phase of the wellbore fluid.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 2, 2006 and granted November 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 2, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.